diff options
Diffstat (limited to 'gcc/tree-complex.c')
| -rw-r--r-- | gcc/tree-complex.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/tree-complex.c b/gcc/tree-complex.c index 7dbc63ab12d..2835220c206 100644 --- a/gcc/tree-complex.c +++ b/gcc/tree-complex.c @@ -99,7 +99,10 @@ some_nonzerop (tree t) { int zerop = false; - if (TREE_CODE (t) == REAL_CST) + /* Operations with real or imaginary part of a complex number zero + cannot be treated the same as operations with a real or imaginary + operand if we care about the signs of zeros in the result. */ + if (TREE_CODE (t) == REAL_CST && !flag_signed_zeros) zerop = REAL_VALUES_IDENTICAL (TREE_REAL_CST (t), dconst0); else if (TREE_CODE (t) == FIXED_CST) zerop = fixed_zerop (t); |